US20050094055A1 - Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel - Google Patents
Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel Download PDFInfo
- Publication number
- US20050094055A1 US20050094055A1 US11/004,095 US409504A US2005094055A1 US 20050094055 A1 US20050094055 A1 US 20050094055A1 US 409504 A US409504 A US 409504A US 2005094055 A1 US2005094055 A1 US 2005094055A1
- Authority
- US
- United States
- Prior art keywords
- liquid crystal
- cassette
- crystal panels
- crystal panel
- inspection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Definitions
- the present invention relates to a cassette containing at least one liquid crystal panel, and more particularly, to a cassette facilitating the inspection of at least one liquid crystal panel and a method of inspecting at least one liquid crystal panel.
- LCDs liquid crystal displays
- PDPs plasma display panels
- ELDs electro-luminescent displays
- VFDs vacuum fluorescent displays
- FED(field emission display), etc. flat panel displays
- LCDs are ideal in for use in notebook personal computers, desk-top monitors, and televisions, and the like.
- LCDs are fabricated using a series of fabricating processes including a substrate fabricating process, a liquid crystal panel fabricating process, and a module fabricating process.
- the substrate fabricating process includes steps of forming an array of thin film transistors (TFTs) and pixel electrodes on a first substrate (i.e., a TFT substrate) and forming a black matrix, a color filter layer, etc., on a second substrate (i.e., a color filter substrate).
- TFTs thin film transistors
- pixel electrodes on a first substrate
- second substrate i.e., a color filter substrate
- the liquid crystal panel fabricating process includes a step of bonding the TFT substrate and the color filter substrate together such that they are spaced apart at a uniform distance by a cell gap.
- the liquid crystal panel fabricating process further includes a step of injecting liquid crystal material into the cell gap.
- the module fabricating process generally includes steps required to fabricate an operational LCD module after a signal processing circuit is fabricated.
- a first cassette (not shown), housing a first plurality of TFT substrates, and a second cassette (not shown), housing a second plurality of color filter substrates, are mounted into respective ports via loaders.
- a plurality of gate lines are formed at fixed intervals along a first direction and a plurality of data lines are formed along a second direction, perpendicular to the first direction, on the TFT substrate. Accordingly, a plurality of pixel regions may be formed in a matrix pattern at the crossing of each of the gate and data lines.
- a plurality of pixel electrodes and a plurality of thin film transistors (TFTs) are formed at the pixel regions.
- a black matrix layer, color filters, and a common electrode are sequentially formed on the color filter substrate.
- each of the TFT and color filter substrates are unloaded from the first and second cassettes, respectively, using a robot arm programmed to select each of the TFT and color filter substrates one at a time.
- an alignment process ( 1 S) is performed on the coated alignment material to uniformly align liquid crystal material that is to be injected into the cell gap.
- the TFT and color filter substrates are cleaned ( 2 S), spacers are dispensed on the TFT substrate so as to ensure that the cell gap is uniform ( 3 S), sealant is coated on an edge of the color filter substrate such that a liquid crystal injection inlet is formed ( 4 S), and the TFT and color filter substrates are then bonded to each other ( 5 S).
- the bonded TFT and color filter substrates are then cut and processed into a liquid crystal panel ( 6 S).
- liquid crystal material is injected through the liquid crystal injection inlet into the cell gap of each of the liquid crystal panels and the liquid crystal injection inlet is then sealed ( 7 S).
- liquid crystal panel is inspected to determine the presence of any electrical failures and to evaluate the thermal stability of the injected liquid crystal material ( 8 S).
- the electrical failure inspection is performed by performing a lighting test on each of the liquid crystal panels using an A/P station. Inspection to evaluate the thermal stability of the injected liquid crystal material is performed by storing a plurality of liquid crystal panels in a substantially vertical position for a predetermined amount time at a constant, elevated temperature, (e.g., greater than room temperature).
- a cassette facilitating the transport and storage of a plurality liquid crystal panels, is therefore required in inspecting a plurality of the liquid crystal panels.
- the cassette is not only used in transporting, storing, and inspecting the plurality of liquid crystal panels, but is also used during the substrate, liquid crystal panel, and module fabricating processes.
- FIG. 2 illustrates a perspective view of a cassette used in inspecting liquid crystal panels.
- a cassette used in inspecting liquid crystal panels includes a pair of side plates 17 having slots for supporting opposing edges of a plurality of liquid crystal panels 11 , a frame 13 for supporting the side plates 17 , and bars 15 for adjusting a distance between the side plates 17 in accordance with sizes of various the liquid crystal panels 11 .
- Slots 19 are arranged vertically along the side plates 17 for supporting the liquid crystal panels 11 arranged within the cassette. Dimensions of the slots 19 are maintained such that the area of the liquid crystal panels 11 contacting the slots 19 is minimized.
- FIG. 3 illustrates a diagram of a liquid crystal panel inspecting method
- FIG. 4 illustrates a perspective view of a problem encountered during inspection when using cassettes such as those illustrated in FIG. 2 .
- a plurality of liquid crystal panels 11 containing liquid crystal material that are to be inspected for thermal stability are oriented substantially vertically within a cassette 30 .
- the cassette 30 is then loaded into an oven 10 via a manually guided vehicle (MGV) 20 .
- MMV manually guided vehicle
- the cassette 30 After being heated for a predetermined amount of time, the cassette 30 is unloaded from the oven 10 . Upon inspection, the thermal stability of the liquid crystal material within each of the liquid crystal panels 11 is evaluated. If it is determined that bubbles are present at an upper portion of the liquid crystal panels 11 , the thermal stability of the liquid crystal material is determined to be insufficient and the liquid crystal panel is considered a failure.
- performing the thermal stability inspection may be facilitated as bubbles are generally easier to detect in liquid crystal panels oriented substantially vertically compared to liquid crystal panels oriented substantially horizontally.
- the liquid crystal panel arrangement illustrated in FIG. 4 is disadvantageous for the following reasons.
- the liquid crystal panels 11 when the plurality of the liquid crystal panels 11 are inserted into the cassette 30 illustrated in FIG. 4 , the liquid crystal panels 11 have a tendency to contact both side plates 17 and associated slots 19 . Accordingly, the liquid crystal panels 11 provided in the arrangement described above may be scratched or broken when the cassette is loaded and unloaded into and out of the oven 10 .
- the present invention is directed to a cassette facilitating the inspection of liquid crystal panels and a method of inspecting liquid crystal panels that substantially obviates one or more problems due to limitations and disadvantages of the related art.
- An advantage of the present invention provides a cassette used in inspecting liquid crystal panels and a method of inspecting liquid crystal panels.
- liquid crystal panels to be inspected may be arranged within the cassette while minimizing the risk of being broken.
- a cassette facilitating the inspection of liquid crystal panels may include a frame, substantially parallel plates arranged at top and bottom portions of the frame, and slots coupled to the plates so as to secure liquid crystal panels arranged within the cassette.
- the frame may have a horizontal length greater than a vertical length.
- the frame may have a horizontal length less than a vertical length.
- the frame have a horizontal length substantially equal to a vertical length.
- a width of the slots corresponds with a thickness of liquid crystal panels.
- the slots may be formed such that they contact at least a portion of the edges of each of the liquid crystal panels.
- a method of inspecting liquid crystal panels may include the steps of inserting a plurality of liquid crystal panels into a substantially vertically oriented cassette, wherein the plurality of liquid crystal panels are arranged such that they are substantially parallel to each other, arranging the cassette such that the liquid crystal panels are substantially vertically oriented, loading the cassette into an oven, and maintaining the oven at a constant temperature (e.g., about 60 ⁇ 120° C.).
- the method may further include the steps of unloading the cassette from the oven and inspecting each of the liquid crystal panels while they are oriented substantially vertically to evaluate the thermal stability of the liquid crystal material.
- At least one cassette may be loaded into the oven.
- FIG. 1 illustrates a flowchart of a liquid crystal panel fabricating method
- FIG. 2 illustrates a perspective view of a cassette used in inspecting liquid crystal panels
- FIG. 3 illustrates a diagram of a liquid crystal panel inspecting method
- FIG. 4 illustrates a perspective view of a problem encountered during inspection when using cassettes such as those illustrated in FIG. 2 ;
- FIG. 5 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to an embodiment of the present invention
- FIG. 6 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to another embodiment of the present invention.
- FIG. 5 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to an embodiment of the present invention.
- a cassette facilitating the inspection of liquid crystal panels may, for example, include a frame 103 for holding a plurality of liquid crystal panels 101 , plates 107 arranged substantially parallel to each other at top and bottom portions of the frame 103 , and slots 109 coupled to the plates for securing at least one liquid crystal panel 101 arranged within the cassette in a substantially vertical orientation.
- the frame 103 may be characterized as having a horizontal length 103 a longer than a vertical length 103 b.
- slots 109 may be formed such an area of the slots 109 contacting the at least one liquid crystal panel 101 is minimized.
- the cassette may, for example, be substantially vertically oriented. As shown in FIG. 5A , a plurality of the liquid crystal panels 101 may be arranged in the cassette such that they are substantially parallel with each other and substantially horizontally oriented. Plates 107 may be arranged at right and left sides of the liquid crystal panels 101 and the liquid crystal panels 101 may be arranged within the slots 109 .
- the cassette having a plurality of liquid crystal panels arranged therein, may then be oriented substantially horizontally and loaded into an oven 10 using an MGV (manually guided vehicle).
- the plurality of liquid crystal panels 101 may be inserted into the oven 10 such that they are oriented substantially vertically.
- slots 109 may support at least a portion of the edges of the liquid crystal panels 101 . Moreover, the width of each of the slots 109 may correspond with a thickness of each of the liquid crystal panels. In one aspect of the present invention, each of the liquid crystal panels 101 in their respective slots 109 may be separated from each other.
- the cassette After being heated for a predetermined amount of time at a constant temperature (e.g., about 60 ⁇ 120° C.), the cassette may be removed from the oven 10 . Upon performing an inspection, the thermal stability of the liquid crystal material within each of the liquid crystal panels 101 may evaluated. If it is determined that bubbles are found at an upper portion of any of the liquid crystal panels 101 inserted into the cassette, the liquid crystal panel 101 is determined to be a failure.
- a constant temperature e.g., about 60 ⁇ 120° C.
- the cassette facilitates the vertical insertion and inspection of liquid crystal panels heated in an oven.
- FIG. 6 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to another embodiment of the present invention.
- a cassette facilitating the inspection of liquid crystal panels may, for example, include a frame 203 for holding a plurality of liquid crystal panels 101 , plates 207 arranged substantially parallel to each other at top and bottom portions of the frame 203 , and slots 209 coupled to the plates 207 for securing at least one liquid crystal panel 101 arranged within the cassette in a substantially vertical orientation.
- the frame 203 may be characterized as having a horizontal length 203 a less than, or substantially equal to, a vertical length 203 b.
- the cassette may be smaller in size than cassettes such as those illustrated in FIG. 2 .
- the smaller size facilitates the transport and orientation of cassettes having liquid crystal panels arranged therein.
- the cassette of the present embodiment may be loaded and unloaded into and out from an oven.
- liquid crystal panels 101 may be horizontally arranged within the cassette illustrated in FIG. 6 , when the cassette is oriented substantially vertically. Once loaded with at least one liquid crystal panel 101 , the cassette may be loaded and unloaded into and out from the oven. In one aspect of the present invention, the cassette may be oriented substantially horizontally within the oven and during inspection such that the liquid crystal panels are oriented substantially vertically.
- the cassette may facilitate the inspection and transport of liquid crystal panels.
- At least one liquid crystal panel may be arranged within the cassette. Further, the at least one liquid crystal panel may be prevented from breaking even when the cassette of the present invention is transported.
Abstract
Description
- This application claims the benefit of the Korean Application No. P2002-15963 filed on Mar. 25, 2002, which is hereby incorporated by reference for all purposes as if fully set forth herein.
- 1. Field of the Invention
- The present invention relates to a cassette containing at least one liquid crystal panel, and more particularly, to a cassette facilitating the inspection of at least one liquid crystal panel and a method of inspecting at least one liquid crystal panel.
- 2. Discussion of the Related Art
- Generally, recent developments in technology have increased the demand for various types of display devices. In response to this increased demand, numerous types of flat panel displays (e.g., liquid crystal displays (LCDs), plasma display panels (PDPs), electro-luminescent displays (ELDs), vacuum fluorescent displays (VFDs), FED(field emission display), etc.) have been developed.
- Owing to their large contrast ratio, low power consumption, and their ability to display gray levels and moving pictures, LCDs are ideal in for use in notebook personal computers, desk-top monitors, and televisions, and the like.
- LCDs are fabricated using a series of fabricating processes including a substrate fabricating process, a liquid crystal panel fabricating process, and a module fabricating process.
- The substrate fabricating process includes steps of forming an array of thin film transistors (TFTs) and pixel electrodes on a first substrate (i.e., a TFT substrate) and forming a black matrix, a color filter layer, etc., on a second substrate (i.e., a color filter substrate).
- The liquid crystal panel fabricating process includes a step of bonding the TFT substrate and the color filter substrate together such that they are spaced apart at a uniform distance by a cell gap. The liquid crystal panel fabricating process further includes a step of injecting liquid crystal material into the cell gap.
- The module fabricating process generally includes steps required to fabricate an operational LCD module after a signal processing circuit is fabricated.
- A typical liquid crystal panel fabricating process will now be described in greater detail.
- A first cassette (not shown), housing a first plurality of TFT substrates, and a second cassette (not shown), housing a second plurality of color filter substrates, are mounted into respective ports via loaders.
- A plurality of gate lines are formed at fixed intervals along a first direction and a plurality of data lines are formed along a second direction, perpendicular to the first direction, on the TFT substrate. Accordingly, a plurality of pixel regions may be formed in a matrix pattern at the crossing of each of the gate and data lines. A plurality of pixel electrodes and a plurality of thin film transistors (TFTs) are formed at the pixel regions. A black matrix layer, color filters, and a common electrode are sequentially formed on the color filter substrate.
- Next, each of the TFT and color filter substrates are unloaded from the first and second cassettes, respectively, using a robot arm programmed to select each of the TFT and color filter substrates one at a time.
- Referring to
FIG. 1 , after an alignment material has been coated on the unloaded TFT and color filter substrates, an alignment process (1S) is performed on the coated alignment material to uniformly align liquid crystal material that is to be injected into the cell gap. - After the alignment process is completed, the TFT and color filter substrates are cleaned (2S), spacers are dispensed on the TFT substrate so as to ensure that the cell gap is uniform (3S), sealant is coated on an edge of the color filter substrate such that a liquid crystal injection inlet is formed (4S), and the TFT and color filter substrates are then bonded to each other (5S).
- The bonded TFT and color filter substrates are then cut and processed into a liquid crystal panel (6S).
- Subsequently, liquid crystal material is injected through the liquid crystal injection inlet into the cell gap of each of the liquid crystal panels and the liquid crystal injection inlet is then sealed (7S).
- Lastly, the liquid crystal panel is inspected to determine the presence of any electrical failures and to evaluate the thermal stability of the injected liquid crystal material (8S).
- The electrical failure inspection is performed by performing a lighting test on each of the liquid crystal panels using an A/P station. Inspection to evaluate the thermal stability of the injected liquid crystal material is performed by storing a plurality of liquid crystal panels in a substantially vertical position for a predetermined amount time at a constant, elevated temperature, (e.g., greater than room temperature).
- A cassette, facilitating the transport and storage of a plurality liquid crystal panels, is therefore required in inspecting a plurality of the liquid crystal panels. The cassette is not only used in transporting, storing, and inspecting the plurality of liquid crystal panels, but is also used during the substrate, liquid crystal panel, and module fabricating processes.
-
FIG. 2 illustrates a perspective view of a cassette used in inspecting liquid crystal panels. - Referring to
FIG. 2 , a cassette used in inspecting liquid crystal panels includes a pair ofside plates 17 having slots for supporting opposing edges of a plurality ofliquid crystal panels 11, aframe 13 for supporting theside plates 17, andbars 15 for adjusting a distance between theside plates 17 in accordance with sizes of various theliquid crystal panels 11. -
Slots 19 are arranged vertically along theside plates 17 for supporting theliquid crystal panels 11 arranged within the cassette. Dimensions of theslots 19 are maintained such that the area of theliquid crystal panels 11 contacting theslots 19 is minimized. - When the
liquid crystal panels 11 are inserted into thecassette 30 as illustrated inFIG. 2 , however, the productivity of an inspection of liquid crystal material for thermal stability and failure is minimized, as will be described in greater detail below. -
FIG. 3 illustrates a diagram of a liquid crystal panel inspecting method andFIG. 4 illustrates a perspective view of a problem encountered during inspection when using cassettes such as those illustrated inFIG. 2 . - Referring to
FIG. 3 , a plurality ofliquid crystal panels 11 containing liquid crystal material that are to be inspected for thermal stability, are oriented substantially vertically within acassette 30. Thecassette 30 is then loaded into anoven 10 via a manually guided vehicle (MGV) 20. - After being heated for a predetermined amount of time, the
cassette 30 is unloaded from theoven 10. Upon inspection, the thermal stability of the liquid crystal material within each of theliquid crystal panels 11 is evaluated. If it is determined that bubbles are present at an upper portion of theliquid crystal panels 11, the thermal stability of the liquid crystal material is determined to be insufficient and the liquid crystal panel is considered a failure. When theliquid crystal panels 11 are arranged within thecassette 30 in substantially vertical orientation, performing the thermal stability inspection may be facilitated as bubbles are generally easier to detect in liquid crystal panels oriented substantially vertically compared to liquid crystal panels oriented substantially horizontally. - The horizontal lengths of both the
cassette 30 and the oven opening 10 a illustrated inFIGS. 2 and 3 , respectively, are greater than their respective vertical lengths. Accordingly, and referring toFIG. 4 ,liquid crystal panels 11 must be loaded vertically into cassettes such as those illustrated inFIG. 2 when thecassette 30 is loaded into theoven 10. - The liquid crystal panel arrangement illustrated in
FIG. 4 , however, is disadvantageous for the following reasons. - First, when the plurality of the
liquid crystal panels 11 are inserted into thecassette 30 illustrated inFIG. 4 , theliquid crystal panels 11 have a tendency to contact bothside plates 17 and associatedslots 19. Accordingly, theliquid crystal panels 11 provided in the arrangement described above may be scratched or broken when the cassette is loaded and unloaded into and out of theoven 10. - Second, when the plurality of
liquid crystal panels 11 are inserted into thecassette 30, as illustrated inFIG. 4 , they are generally inclined and thus remove space within thecassette 30 that would otherwise be available for otherliquid crystal panels 11. Accordingly, space within the cassette is inefficiently managed. - Accordingly, the present invention is directed to a cassette facilitating the inspection of liquid crystal panels and a method of inspecting liquid crystal panels that substantially obviates one or more problems due to limitations and disadvantages of the related art.
- An advantage of the present invention provides a cassette used in inspecting liquid crystal panels and a method of inspecting liquid crystal panels.
- In one aspect of the present invention, liquid crystal panels to be inspected may be arranged within the cassette while minimizing the risk of being broken.
- Additional advantages and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. These and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
- To achieve these and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a cassette facilitating the inspection of liquid crystal panels may include a frame, substantially parallel plates arranged at top and bottom portions of the frame, and slots coupled to the plates so as to secure liquid crystal panels arranged within the cassette.
- In one aspect of the present invention, the frame may have a horizontal length greater than a vertical length.
- In another aspect of the present invention, the frame may have a horizontal length less than a vertical length.
- In yet another aspect of the present invention, the frame have a horizontal length substantially equal to a vertical length.
- In still another aspect of the present invention, a width of the slots corresponds with a thickness of liquid crystal panels.
- Further, in another aspect of the present invention, the slots may be formed such that they contact at least a portion of the edges of each of the liquid crystal panels.
- In yet another aspect of the present invention, a method of inspecting liquid crystal panels may include the steps of inserting a plurality of liquid crystal panels into a substantially vertically oriented cassette, wherein the plurality of liquid crystal panels are arranged such that they are substantially parallel to each other, arranging the cassette such that the liquid crystal panels are substantially vertically oriented, loading the cassette into an oven, and maintaining the oven at a constant temperature (e.g., about 60˜120° C.).
- In still another aspect of the present invention, the method may further include the steps of unloading the cassette from the oven and inspecting each of the liquid crystal panels while they are oriented substantially vertically to evaluate the thermal stability of the liquid crystal material.
- In a further aspect of the present invention, at least one cassette may be loaded into the oven.
- It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention.
- In the drawings:
-
FIG. 1 illustrates a flowchart of a liquid crystal panel fabricating method; -
FIG. 2 illustrates a perspective view of a cassette used in inspecting liquid crystal panels; -
FIG. 3 illustrates a diagram of a liquid crystal panel inspecting method; -
FIG. 4 illustrates a perspective view of a problem encountered during inspection when using cassettes such as those illustrated inFIG. 2 ; -
FIG. 5 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to an embodiment of the present invention; and -
FIG. 6 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to another embodiment of the present invention. - Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
-
FIG. 5 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to an embodiment of the present invention. - Referring to
FIG. 5 , a cassette facilitating the inspection of liquid crystal panels may, for example, include aframe 103 for holding a plurality ofliquid crystal panels 101,plates 107 arranged substantially parallel to each other at top and bottom portions of theframe 103, andslots 109 coupled to the plates for securing at least oneliquid crystal panel 101 arranged within the cassette in a substantially vertical orientation. - The
frame 103 may be characterized as having ahorizontal length 103 a longer than avertical length 103 b. - In one aspect of the present invention,
slots 109 may be formed such an area of theslots 109 contacting the at least oneliquid crystal panel 101 is minimized. - A method of inspecting liquid crystals using the aforementioned cassette will now be explained in detail.
- After insertion of the plurality of
liquid crystal panels 101, the cassette may, for example, be substantially vertically oriented. As shown inFIG. 5A , a plurality of theliquid crystal panels 101 may be arranged in the cassette such that they are substantially parallel with each other and substantially horizontally oriented.Plates 107 may be arranged at right and left sides of theliquid crystal panels 101 and theliquid crystal panels 101 may be arranged within theslots 109. - As shown in
FIG. 5B , the cassette, having a plurality of liquid crystal panels arranged therein, may then be oriented substantially horizontally and loaded into anoven 10 using an MGV (manually guided vehicle). In one aspect of the present invention, the plurality ofliquid crystal panels 101 may be inserted into theoven 10 such that they are oriented substantially vertically. - When the
liquid crystal panels 101 are inserted into the cassette,slots 109 may support at least a portion of the edges of theliquid crystal panels 101. Moreover, the width of each of theslots 109 may correspond with a thickness of each of the liquid crystal panels. In one aspect of the present invention, each of theliquid crystal panels 101 in theirrespective slots 109 may be separated from each other. - After being heated for a predetermined amount of time at a constant temperature (e.g., about 60˜120° C.), the cassette may be removed from the
oven 10. Upon performing an inspection, the thermal stability of the liquid crystal material within each of theliquid crystal panels 101 may evaluated. If it is determined that bubbles are found at an upper portion of any of theliquid crystal panels 101 inserted into the cassette, theliquid crystal panel 101 is determined to be a failure. - According to the principles of the present invention, the cassette facilitates the vertical insertion and inspection of liquid crystal panels heated in an oven.
-
FIG. 6 illustrates a perspective view of a cassette facilitating the inspection of liquid crystal panels according to another embodiment of the present invention. - Referring to
FIG. 6 , a cassette facilitating the inspection of liquid crystal panels may, for example, include aframe 203 for holding a plurality ofliquid crystal panels 101,plates 207 arranged substantially parallel to each other at top and bottom portions of theframe 203, andslots 209 coupled to theplates 207 for securing at least oneliquid crystal panel 101 arranged within the cassette in a substantially vertical orientation. - The
frame 203 may be characterized as having ahorizontal length 203 a less than, or substantially equal to, avertical length 203 b. - In one aspect of the present invention, the cassette may be smaller in size than cassettes such as those illustrated in
FIG. 2 . The smaller size facilitates the transport and orientation of cassettes having liquid crystal panels arranged therein. Additionally, the cassette of the present embodiment may be loaded and unloaded into and out from an oven. - As similarly described with respect to the embodiment mentioned above,
liquid crystal panels 101 may be horizontally arranged within the cassette illustrated inFIG. 6 , when the cassette is oriented substantially vertically. Once loaded with at least oneliquid crystal panel 101, the cassette may be loaded and unloaded into and out from the oven. In one aspect of the present invention, the cassette may be oriented substantially horizontally within the oven and during inspection such that the liquid crystal panels are oriented substantially vertically. - According to the principles of the present invention, the cassette may facilitate the inspection and transport of liquid crystal panels.
- According to the principles of the present invention, at least one liquid crystal panel may be arranged within the cassette. Further, the at least one liquid crystal panel may be prevented from breaking even when the cassette of the present invention is transported.
- It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/004,095 US7423703B2 (en) | 2002-03-25 | 2004-12-06 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020015963A KR20030077070A (en) | 2002-03-25 | 2002-03-25 | A Cassette for Measuring Gravitation Badness |
KR2002-15963 | 2002-03-25 | ||
US10/316,894 US20030179341A1 (en) | 2002-03-25 | 2002-12-12 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
US11/004,095 US7423703B2 (en) | 2002-03-25 | 2004-12-06 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/316,894 Division US20030179341A1 (en) | 2002-03-25 | 2002-12-12 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050094055A1 true US20050094055A1 (en) | 2005-05-05 |
US7423703B2 US7423703B2 (en) | 2008-09-09 |
Family
ID=28036176
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/316,894 Abandoned US20030179341A1 (en) | 2002-03-25 | 2002-12-12 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
US11/004,095 Expired - Lifetime US7423703B2 (en) | 2002-03-25 | 2004-12-06 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/316,894 Abandoned US20030179341A1 (en) | 2002-03-25 | 2002-12-12 | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel |
Country Status (2)
Country | Link |
---|---|
US (2) | US20030179341A1 (en) |
KR (1) | KR20030077070A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100434977C (en) * | 2005-11-18 | 2008-11-19 | 飞而康公司 | Checking platform of checking device of LCD panel |
CN100437226C (en) * | 2006-12-05 | 2008-11-26 | 友达光电股份有限公司 | Checking platform and checking method using the same |
CN100449362C (en) * | 2005-06-03 | 2009-01-07 | 飞而康公司 | Liquid crystal display panel testing device |
DE102006023968B4 (en) * | 2005-12-29 | 2009-12-10 | Lg Display Co., Ltd. | Inspection device for liquid crystal display panel |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060155170A1 (en) * | 2002-12-13 | 2006-07-13 | Synthes Spine Company, Lp | Guided retractor and methods of use |
TWI315002B (en) * | 2005-04-15 | 2009-09-21 | Innolux Display Corp | Substrate cassette |
KR100939621B1 (en) * | 2005-06-25 | 2010-02-02 | 엘지디스플레이 주식회사 | Cassette |
KR100816646B1 (en) * | 2006-09-14 | 2008-03-27 | 오성엘에스티(주) | Supporting device of display pannel |
KR101036212B1 (en) * | 2009-12-11 | 2011-05-20 | 인텔릭스(주) | Electronic device with hermetic radiation case |
US9597957B2 (en) | 2012-05-07 | 2017-03-21 | Briggs And Stratton Corporation | Suspension system and method |
US10005437B2 (en) | 2015-03-11 | 2018-06-26 | Briggs & Stratton Corporation | Machine suspension system |
US20220048699A1 (en) * | 2019-03-12 | 2022-02-17 | Skc Co., Ltd. | Loading cassette for substrate including glass and substrate loading method to which same is applied |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978580A (en) * | 1973-06-28 | 1976-09-07 | Hughes Aircraft Company | Method of fabricating a liquid crystal display |
US4653864A (en) * | 1986-02-26 | 1987-03-31 | Ovonic Imaging Systems, Inc. | Liquid crystal matrix display having improved spacers and method of making same |
US4775225A (en) * | 1985-05-16 | 1988-10-04 | Canon Kabushiki Kaisha | Liquid crystal device having pillar spacers with small base periphery width in direction perpendicular to orientation treatment |
US5263888A (en) * | 1992-02-20 | 1993-11-23 | Matsushita Electric Industrial Co., Ltd. | Method of manufacture of liquid crystal display panel |
US5379139A (en) * | 1986-08-20 | 1995-01-03 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device and method for manufacturing same with spacers formed by photolithography |
US5406989A (en) * | 1993-10-12 | 1995-04-18 | Ayumi Industry Co., Ltd. | Method and dispenser for filling liquid crystal into LCD cell |
US5499128A (en) * | 1993-03-15 | 1996-03-12 | Kabushiki Kaisha Toshiba | Liquid crystal display device with acrylic polymer spacers and method of manufacturing the same |
US5507323A (en) * | 1993-10-12 | 1996-04-16 | Fujitsu Limited | Method and dispenser for filling liquid crystal into LCD cell |
US5539545A (en) * | 1993-05-18 | 1996-07-23 | Semiconductor Energy Laboratory Co., Ltd. | Method of making LCD in which resin columns are cured and the liquid crystal is reoriented |
US5548429A (en) * | 1993-06-14 | 1996-08-20 | Canon Kabushiki Kaisha | Process for producing liquid crystal device whereby curing the sealant takes place after pre-baking the substrates |
US5677749A (en) * | 1992-05-25 | 1997-10-14 | Sharp Kabushiki Kaisha | Method for producing an LCD having no spacers in the display area in which heating alleviates cell distortion or greater pressure is applied to the seal region |
US5699138A (en) * | 1992-08-19 | 1997-12-16 | Canon Kabushiki Kaisha | Process for injecting liquid crystal into a liquid crystal panel |
US5757451A (en) * | 1995-09-08 | 1998-05-26 | Kabushiki Kaisha Toshiba | Liquid crystal display device spacers formed from stacked color layers |
US5852484A (en) * | 1994-09-26 | 1998-12-22 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal display panel and method and device for manufacturing the same |
US5861932A (en) * | 1997-03-31 | 1999-01-19 | Denso Corporation | Liquid crystal cell and its manufacturing method |
US5952678A (en) * | 1995-01-23 | 1999-09-14 | Mitsubishi Denki Kabushiki Kaisha | SRAM cell with no PN junction between driver and load transistors and method of manufacturing the same |
US5956112A (en) * | 1995-10-02 | 1999-09-21 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for manufacturing the same |
US6001203A (en) * | 1995-03-01 | 1999-12-14 | Matsushita Electric Industrial Co., Ltd. | Production process of liquid crystal display panel, seal material for liquid crystal cell and liquid crystal display |
US6016181A (en) * | 1996-11-07 | 2000-01-18 | Sharp Kabushiki Kaisha | Liquid crystal device having column spacers with portion on each of the spacers for reflecting or absorbing visible light and method for fabricating the same |
US6186344B1 (en) * | 1995-09-07 | 2001-02-13 | Samsung Electronics Co., Ltd. | Cassette for loading glasses for liquid crystal display device |
US6190224B1 (en) * | 1998-10-02 | 2001-02-20 | Samsung Electronics Co., Ltd. | Automation system and a method for assembling a workpiece |
US6219126B1 (en) * | 1998-11-20 | 2001-04-17 | International Business Machines Corporation | Panel assembly for liquid crystal displays having a barrier fillet and an adhesive fillet in the periphery |
US6236445B1 (en) * | 1996-02-22 | 2001-05-22 | Hughes Electronics Corporation | Method for making topographic projections |
US20020001866A1 (en) * | 2000-06-30 | 2002-01-03 | Minolta Co. | Processing method of a plurality of films |
US6337730B1 (en) * | 1998-06-02 | 2002-01-08 | Denso Corporation | Non-uniformly-rigid barrier wall spacers used to correct problems caused by thermal contraction of smectic liquid crystal material |
US20020012094A1 (en) * | 2000-07-28 | 2002-01-31 | Shunji Suzuki | Liquid crystal cell, display device, and method of fabricating liquid crystal cell |
US6391137B1 (en) * | 1998-10-02 | 2002-05-21 | Sharp Kabushiki Kaisha | Method for producing display device |
US6398610B1 (en) * | 1999-01-08 | 2002-06-04 | Nec Corporation | Display panel production line |
US20050018126A1 (en) * | 2000-12-30 | 2005-01-27 | Choi Suk Won | Method of fabricating ferroelectric liquid crystal display |
Family Cites Families (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5165656A (en) | 1974-12-04 | 1976-06-07 | Shinshu Seiki Kk | |
US4094058A (en) * | 1976-07-23 | 1978-06-13 | Omron Tateisi Electronics Co. | Method of manufacture of liquid crystal displays |
JPS5738414A (en) | 1980-08-20 | 1982-03-03 | Showa Denko Kk | Spacer for display panel |
JPS5788428A (en) | 1980-11-20 | 1982-06-02 | Ricoh Elemex Corp | Manufacture of liquid crystal display body device |
JPS5827126A (en) | 1981-08-11 | 1983-02-17 | Nec Corp | Production of liquid crystal display panel |
JPS5957221A (en) | 1982-09-28 | 1984-04-02 | Asahi Glass Co Ltd | Production of display element |
JPS59195222A (en) | 1983-04-19 | 1984-11-06 | Matsushita Electric Ind Co Ltd | Manufacture of liquid-crystal panel |
JPS60111221A (en) | 1983-11-19 | 1985-06-17 | Nippon Denso Co Ltd | Method and device for charging liquid crystal |
JPS60164723A (en) | 1984-02-07 | 1985-08-27 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
JPS60217343A (en) | 1984-04-13 | 1985-10-30 | Matsushita Electric Ind Co Ltd | Liquid crystal display device and its preparation |
JPS617822A (en) | 1984-06-22 | 1986-01-14 | Canon Inc | Production of liquid crystal element |
JPS6155625A (en) | 1984-08-24 | 1986-03-20 | Nippon Denso Co Ltd | Manufacture of liquid crystal element |
US4691995A (en) * | 1985-07-15 | 1987-09-08 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal filling device |
JPS6289025A (en) | 1985-10-15 | 1987-04-23 | Matsushita Electric Ind Co Ltd | Liquid crystal display panel and its production |
JPS6290622A (en) | 1985-10-17 | 1987-04-25 | Seiko Epson Corp | Liquid crystal display device |
JPH0668589B2 (en) | 1986-03-06 | 1994-08-31 | キヤノン株式会社 | Ferroelectric liquid crystal element |
JPS63109413A (en) | 1986-10-27 | 1988-05-14 | Fujitsu Ltd | Production of liquid crystal display |
JPS63110425A (en) | 1986-10-29 | 1988-05-14 | Toppan Printing Co Ltd | Cell for sealing liquid crystal |
JPS63128315A (en) | 1986-11-19 | 1988-05-31 | Victor Co Of Japan Ltd | Liquid crystal display element |
JPS63311233A (en) | 1987-06-12 | 1988-12-20 | Toyota Motor Corp | Liquid crystal cell |
DE3825066A1 (en) * | 1988-07-23 | 1990-01-25 | Roehm Gmbh | METHOD FOR PRODUCING THICKNESS, ANISOTROPIC LAYERS ON SURFACE-STRUCTURED CARRIERS |
EP0528542B1 (en) * | 1991-07-19 | 1998-09-16 | SHARP Corporation | Optical modulating element and apparatuses using it |
JPH05127179A (en) | 1991-11-01 | 1993-05-25 | Ricoh Co Ltd | Production of liquid crystal display element |
JP2609386B2 (en) | 1991-12-06 | 1997-05-14 | 株式会社日立製作所 | Board assembly equipment |
JPH05265011A (en) | 1992-03-19 | 1993-10-15 | Seiko Instr Inc | Production of liquid crystal display element |
JPH05281562A (en) | 1992-04-01 | 1993-10-29 | Matsushita Electric Ind Co Ltd | Manufacture of liquid crystal panel |
JP2939384B2 (en) | 1992-04-01 | 1999-08-25 | 松下電器産業株式会社 | Liquid crystal panel manufacturing method |
JPH0651256A (en) | 1992-07-30 | 1994-02-25 | Matsushita Electric Ind Co Ltd | Device for discharging liquid crystal |
JP3084975B2 (en) | 1992-11-06 | 2000-09-04 | 松下電器産業株式会社 | Liquid crystal display cell manufacturing equipment |
JPH06160871A (en) | 1992-11-26 | 1994-06-07 | Matsushita Electric Ind Co Ltd | Liquid crystal display panel and its production |
JPH06235925A (en) | 1993-02-10 | 1994-08-23 | Matsushita Electric Ind Co Ltd | Manufacture of liquid crystal display element |
JPH06265915A (en) | 1993-03-12 | 1994-09-22 | Matsushita Electric Ind Co Ltd | Discharge device for filling liquid crystal |
JP3170773B2 (en) | 1993-04-28 | 2001-05-28 | 株式会社日立製作所 | Board assembly equipment |
JP3260511B2 (en) | 1993-09-13 | 2002-02-25 | 株式会社日立製作所 | Sealant drawing method |
JP2541477B2 (en) * | 1993-09-30 | 1996-10-09 | 日本電気株式会社 | Panel storage cassettes and composite panel storage cassettes |
JPH07128674A (en) | 1993-11-05 | 1995-05-19 | Matsushita Electric Ind Co Ltd | Production of liquid crystal display element |
JPH07181507A (en) | 1993-12-21 | 1995-07-21 | Canon Inc | Liquid crystal display device and information transmission device having the liquid crystal display device |
JP3189591B2 (en) | 1994-09-27 | 2001-07-16 | 松下電器産業株式会社 | Manufacturing method of liquid crystal element |
JPH08101395A (en) | 1994-09-30 | 1996-04-16 | Matsushita Electric Ind Co Ltd | Production of liquid crystal display element |
JPH08106101A (en) | 1994-10-06 | 1996-04-23 | Fujitsu Ltd | Production of liquid crystal display panel |
JPH08171094A (en) | 1994-12-19 | 1996-07-02 | Nippon Soken Inc | Liquid crystal injecting method and liquid crystal injecting device to liquid crystal display device |
JP3545076B2 (en) | 1995-01-11 | 2004-07-21 | 富士通ディスプレイテクノロジーズ株式会社 | Liquid crystal display device and method of manufacturing the same |
JP3216869B2 (en) * | 1995-02-17 | 2001-10-09 | シャープ株式会社 | Liquid crystal display device and method of manufacturing the same |
JP3534474B2 (en) | 1995-03-06 | 2004-06-07 | 富士通ディスプレイテクノロジーズ株式会社 | Liquid crystal display panel sealing method |
JPH08259193A (en) | 1995-03-27 | 1996-10-08 | Toshiba Corp | Cassette carrier device |
JPH095762A (en) | 1995-06-20 | 1997-01-10 | Matsushita Electric Ind Co Ltd | Production of liquid crystal panel |
JP3978241B2 (en) | 1995-07-10 | 2007-09-19 | シャープ株式会社 | Liquid crystal display panel and manufacturing method thereof |
JPH0961829A (en) | 1995-08-21 | 1997-03-07 | Matsushita Electric Ind Co Ltd | Production of liquid crystal display element |
JP3161296B2 (en) | 1995-09-05 | 2001-04-25 | 松下電器産業株式会社 | Manufacturing method of liquid crystal display element |
JPH0973075A (en) | 1995-09-05 | 1997-03-18 | Matsushita Electric Ind Co Ltd | Production of liquid crystal display element and apparatus for producing liquid crystal display element |
JP3658604B2 (en) | 1995-10-27 | 2005-06-08 | 富士通ディスプレイテクノロジーズ株式会社 | Manufacturing method of liquid crystal panel |
JPH09230357A (en) | 1996-02-22 | 1997-09-05 | Canon Inc | Production of liquid crystal panel and liquid crystal cell used for the same |
JP3790295B2 (en) | 1996-04-17 | 2006-06-28 | シャープ株式会社 | Manufacturing method of liquid crystal display panel |
JP3234496B2 (en) | 1996-05-21 | 2001-12-04 | 松下電器産業株式会社 | Manufacturing method of liquid crystal display device |
KR100208475B1 (en) * | 1996-09-12 | 1999-07-15 | 박원훈 | Method for lc alignment layer with magnetic field process |
EP0829748A3 (en) * | 1996-09-13 | 1999-12-15 | Sony Corporation | Reflective guest-host liquid-crystal display device |
JPH10153785A (en) * | 1996-09-26 | 1998-06-09 | Toshiba Corp | Liquid crystal display device |
KR100207506B1 (en) * | 1996-10-05 | 1999-07-15 | 윤종용 | Lcd device manufacturing method |
JPH10123537A (en) | 1996-10-15 | 1998-05-15 | Matsushita Electric Ind Co Ltd | Liquid crystal display element and its production |
JP3088960B2 (en) | 1996-10-22 | 2000-09-18 | 松下電器産業株式会社 | Manufacturing method of liquid crystal display element |
JPH10142616A (en) | 1996-11-14 | 1998-05-29 | Ayumi Kogyo Kk | Liquid crystal injection method and liquid dispenser |
JPH10177178A (en) | 1996-12-17 | 1998-06-30 | Matsushita Electric Ind Co Ltd | Production of liquid crystal display element |
JP3874871B2 (en) | 1997-02-10 | 2007-01-31 | シャープ株式会社 | Manufacturing method of liquid crystal display device |
JP3773326B2 (en) | 1997-04-07 | 2006-05-10 | アユミ工業株式会社 | Liquid crystal injection method and dispenser used therefor |
JPH10333157A (en) | 1997-06-03 | 1998-12-18 | Matsushita Electric Ind Co Ltd | Manufacture of liquid crystal display device |
JP4028043B2 (en) * | 1997-10-03 | 2007-12-26 | コニカミノルタホールディングス株式会社 | Liquid crystal light modulation device and method for manufacturing liquid crystal light modulation device |
US5875922A (en) * | 1997-10-10 | 1999-03-02 | Nordson Corporation | Apparatus for dispensing an adhesive |
US6055035A (en) * | 1998-05-11 | 2000-04-25 | International Business Machines Corporation | Method and apparatus for filling liquid crystal display (LCD) panels |
US6157252A (en) * | 1998-09-09 | 2000-12-05 | The Engineering Consortium, Inc. | Battery polarity insensitive integrated circuit amplifier |
JP3828670B2 (en) * | 1998-11-16 | 2006-10-04 | 松下電器産業株式会社 | Manufacturing method of liquid crystal display element |
KR100314268B1 (en) * | 1998-12-15 | 2002-10-25 | 주식회사 현대 디스플레이 테크놀로지 | System for transferring hot press jig used in assemblying lcd glasses |
JP3568862B2 (en) * | 1999-02-08 | 2004-09-22 | 大日本印刷株式会社 | Color liquid crystal display |
KR200266538Y1 (en) * | 2001-07-16 | 2002-02-28 | (주)상아프론테크 | Glass cell cassette |
KR200266537Y1 (en) * | 2001-07-16 | 2002-02-28 | (주)상아프론테크 | Side plate for glass cell cassette |
KR200266555Y1 (en) * | 2001-09-21 | 2002-02-28 | (주)상아프론테크 | Glass cell cassette |
-
2002
- 2002-03-25 KR KR1020020015963A patent/KR20030077070A/en active Search and Examination
- 2002-12-12 US US10/316,894 patent/US20030179341A1/en not_active Abandoned
-
2004
- 2004-12-06 US US11/004,095 patent/US7423703B2/en not_active Expired - Lifetime
Patent Citations (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978580A (en) * | 1973-06-28 | 1976-09-07 | Hughes Aircraft Company | Method of fabricating a liquid crystal display |
US4775225A (en) * | 1985-05-16 | 1988-10-04 | Canon Kabushiki Kaisha | Liquid crystal device having pillar spacers with small base periphery width in direction perpendicular to orientation treatment |
US4653864A (en) * | 1986-02-26 | 1987-03-31 | Ovonic Imaging Systems, Inc. | Liquid crystal matrix display having improved spacers and method of making same |
US5379139A (en) * | 1986-08-20 | 1995-01-03 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device and method for manufacturing same with spacers formed by photolithography |
US5263888A (en) * | 1992-02-20 | 1993-11-23 | Matsushita Electric Industrial Co., Ltd. | Method of manufacture of liquid crystal display panel |
US5677749A (en) * | 1992-05-25 | 1997-10-14 | Sharp Kabushiki Kaisha | Method for producing an LCD having no spacers in the display area in which heating alleviates cell distortion or greater pressure is applied to the seal region |
US5699138A (en) * | 1992-08-19 | 1997-12-16 | Canon Kabushiki Kaisha | Process for injecting liquid crystal into a liquid crystal panel |
US5499128A (en) * | 1993-03-15 | 1996-03-12 | Kabushiki Kaisha Toshiba | Liquid crystal display device with acrylic polymer spacers and method of manufacturing the same |
US5539545A (en) * | 1993-05-18 | 1996-07-23 | Semiconductor Energy Laboratory Co., Ltd. | Method of making LCD in which resin columns are cured and the liquid crystal is reoriented |
US5680189A (en) * | 1993-05-18 | 1997-10-21 | Semiconductor Energy Laboratory Co., Ltd. | LCD columnar spacers made of a hydrophilic resin and LCD orientation film having a certain surface tension or alignment capability |
US5548429A (en) * | 1993-06-14 | 1996-08-20 | Canon Kabushiki Kaisha | Process for producing liquid crystal device whereby curing the sealant takes place after pre-baking the substrates |
US5507323A (en) * | 1993-10-12 | 1996-04-16 | Fujitsu Limited | Method and dispenser for filling liquid crystal into LCD cell |
US5406989A (en) * | 1993-10-12 | 1995-04-18 | Ayumi Industry Co., Ltd. | Method and dispenser for filling liquid crystal into LCD cell |
US5852484A (en) * | 1994-09-26 | 1998-12-22 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal display panel and method and device for manufacturing the same |
US5854664A (en) * | 1994-09-26 | 1998-12-29 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal display panel and method and device for manufacturing the same |
US5952678A (en) * | 1995-01-23 | 1999-09-14 | Mitsubishi Denki Kabushiki Kaisha | SRAM cell with no PN junction between driver and load transistors and method of manufacturing the same |
US6001203A (en) * | 1995-03-01 | 1999-12-14 | Matsushita Electric Industrial Co., Ltd. | Production process of liquid crystal display panel, seal material for liquid crystal cell and liquid crystal display |
US6186344B1 (en) * | 1995-09-07 | 2001-02-13 | Samsung Electronics Co., Ltd. | Cassette for loading glasses for liquid crystal display device |
US5757451A (en) * | 1995-09-08 | 1998-05-26 | Kabushiki Kaisha Toshiba | Liquid crystal display device spacers formed from stacked color layers |
US5956112A (en) * | 1995-10-02 | 1999-09-21 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for manufacturing the same |
US6236445B1 (en) * | 1996-02-22 | 2001-05-22 | Hughes Electronics Corporation | Method for making topographic projections |
US6016181A (en) * | 1996-11-07 | 2000-01-18 | Sharp Kabushiki Kaisha | Liquid crystal device having column spacers with portion on each of the spacers for reflecting or absorbing visible light and method for fabricating the same |
US5861932A (en) * | 1997-03-31 | 1999-01-19 | Denso Corporation | Liquid crystal cell and its manufacturing method |
US6337730B1 (en) * | 1998-06-02 | 2002-01-08 | Denso Corporation | Non-uniformly-rigid barrier wall spacers used to correct problems caused by thermal contraction of smectic liquid crystal material |
US6190224B1 (en) * | 1998-10-02 | 2001-02-20 | Samsung Electronics Co., Ltd. | Automation system and a method for assembling a workpiece |
US6391137B1 (en) * | 1998-10-02 | 2002-05-21 | Sharp Kabushiki Kaisha | Method for producing display device |
US6219126B1 (en) * | 1998-11-20 | 2001-04-17 | International Business Machines Corporation | Panel assembly for liquid crystal displays having a barrier fillet and an adhesive fillet in the periphery |
US6398610B1 (en) * | 1999-01-08 | 2002-06-04 | Nec Corporation | Display panel production line |
US20020001866A1 (en) * | 2000-06-30 | 2002-01-03 | Minolta Co. | Processing method of a plurality of films |
US20020012094A1 (en) * | 2000-07-28 | 2002-01-31 | Shunji Suzuki | Liquid crystal cell, display device, and method of fabricating liquid crystal cell |
US20050018126A1 (en) * | 2000-12-30 | 2005-01-27 | Choi Suk Won | Method of fabricating ferroelectric liquid crystal display |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100449362C (en) * | 2005-06-03 | 2009-01-07 | 飞而康公司 | Liquid crystal display panel testing device |
CN100434977C (en) * | 2005-11-18 | 2008-11-19 | 飞而康公司 | Checking platform of checking device of LCD panel |
DE102006023968B4 (en) * | 2005-12-29 | 2009-12-10 | Lg Display Co., Ltd. | Inspection device for liquid crystal display panel |
CN100437226C (en) * | 2006-12-05 | 2008-11-26 | 友达光电股份有限公司 | Checking platform and checking method using the same |
Also Published As
Publication number | Publication date |
---|---|
KR20030077070A (en) | 2003-10-01 |
US20030179341A1 (en) | 2003-09-25 |
US7423703B2 (en) | 2008-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7423703B2 (en) | Cassette for liquid crystal panel inspection and method of inspecting liquid crystal panel | |
US7382433B2 (en) | Apparatus and method for manufacturing a liquid crystal display device, a method for using the apparatus, and a device produced by the method | |
KR100557498B1 (en) | Liquid crystal display device and fabrication method thereof | |
US7361223B2 (en) | Method and apparatus for eliminating a display defect in a liquid crystal display device | |
JP4352063B2 (en) | LCD panel inspection equipment | |
JP2003295144A (en) | Processing line for liquid crystal display device and method of manufacturing liquid crystal display device using the same | |
US7654786B2 (en) | Substrate carrying method thereof | |
US6894759B2 (en) | Apparatus for measuring dispensing amount of liquid crystal drops and method for manufacturing liquid crystal display device using the same | |
US8194226B2 (en) | Device for cooling LCD panel and heat treatment apparatus having the same | |
KR101277216B1 (en) | Cassette for loading glasses | |
CN100507641C (en) | Inspection apparatus for liquid crystal display panels | |
US7708515B2 (en) | Apparatus for loading substrate of liquid crystal display | |
KR20070071266A (en) | Cassette for containing liquid crystal dispaly device | |
US7698833B2 (en) | Apparatus for hardening a sealant located between a pair bonded substrates of liquid crystal display device | |
KR101801397B1 (en) | Apparatus fabrication of liquid crystal display device | |
KR200143154Y1 (en) | Panel moving tray for tft-lcd module fabrication | |
KR100978262B1 (en) | Apparatus for testing liquid crystal dispaly devce | |
KR100847293B1 (en) | Method and apparatus for inspecting external appearance of liquid crystal display panel | |
US7659962B2 (en) | Portable jig | |
KR101002326B1 (en) | The carrier | |
KR20050027497A (en) | Robot hand for transportinng glass | |
KR101338990B1 (en) | Apparatus for substrate transfer | |
KR20030095718A (en) | An Apparatus for Keeping Probe Units | |
KR20070001720A (en) | Cassette for loading substrate and method for loading and unloading sunstrate into the cassette | |
KR20050070378A (en) | Device for examining a cassette |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LG. PHILIPS LCD CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHOO, HUN JUN;REEL/FRAME:016053/0786 Effective date: 20021108 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: LG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021754/0230 Effective date: 20080304 Owner name: LG DISPLAY CO., LTD.,KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021754/0230 Effective date: 20080304 |
|
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 12 |